A bulldog is the common name for a breed of dog also referred to as the English bulldog or British Bulldog. Other bulldog breeds include the American bulldog and the French bulldog. The bulldog is a muscular heavy dog with a wrinkled face and a distinctive pushed-in nose. The American Kennel Club (AKC), The Kennel Club (UK) and the United Kennel Club (UKC) oversee breeding standards.